At times publications will be duplicated and should be merged. One example is an article found in Web of Science is in ALL CAPS and the same article found in Scopus has on the first letters capitalized (aka title case).
In Symplectic Elements, duplicate citations should be joined so they only appear once in the Mine tab with the complete citation metrics and other information. If they are not joined then your metrics will not be accurate for this publication.
Chec the Mine tab by putting items in Sort by Title (A to Z) and check for duplicate titles.
Look for titles that are the same. The data sources are usual different for each item.
In this example:
Symplectic Elements has the ability to create relationships (links) between the different aspects of the author’s research. Links (aka Parent-Child) help show relationships between different areas of scholarly activities, grants or colleagues in the institution. This does not turn them into one item (that is the Join function in the first column) but "links" them as shown in the Links tab of the item.
In this example a journal article should be linked to an erratum (updated information related to the original article such as calculations).
In the Mine tab locate either the original journal article or the erratum and look at the Links tab. The relationship will now show up in this tab (in this case Links 2).